Heres a viral video of Jimmy Kimmels live show, he shows celebrities reading mean tweets that random people online are sending them. It is somehow like cyber bullying, but look how they handle them..
I think it went viral because people always wanted to know if celebrities do read their twitter account and the tweets that people send them and the video pretty much answers that question and also shows you how they react towards them.
It has celebrities, its funny, and its shared by a famous person. Thats how you go viral!